Error plugin

Ho necessita’ di comprare quesot plugin,ho instyallato la versione freee per provarlo e quando vado nella pagina prodotto e voglio aggiungere attributi o creare variazioni,la rotella del preload rimane sempre,controllando nella console di google chrome mi esce questo errore javascritp:
Uncaught TypeError: and (…). SelectWoo is not a function
    at HTMLSelectElement. <anonymous> (wc-enhanced-select.min.js? ver = 4.8.3: 1)
    at function.each (load-scripts.php? c = 1 & load [] = jquery-core, jquery-ui-widget, jquery-ui-core, , wp-a11y, underscores, thickbox, & load [] = shortcode, backbone, wp-util, wp-backbone, medium-models, plupload, wp-plupload, MediaElement, wp-MediaElement, medium-views, media editor, m & load [] = edia-audio-video, editor, media-upload & ver = 4.8.3: 2)
    at a.fn.init.each (load-scripts.php? c = 1 & load [] = jquery-core, jquery-migrate, utils, jquery-ui-core, jquery-ui-widget, jquery-ui-mouse, jquery -ui-sortable, wp-a11y, underscores, thickbox, & load [] = shortcode, backbone, wp-util, wp-backbone, medium-models, plupload, wp-plupload, MediaElement, wp-MediaElement, medium-views, average -editor, m & load [] = edia-audio-video, editor, media-upload & ver = 4.8.3: 2)
    at HTMLBodyElement. <anonymous> (wc-enhanced-select.min.js? ver = 4.8.3: 1)
    jquery-ui-core, jquery-ui-widget, jquery-ui-core, jquery-ui-widget, jquery-ui-core, jquery-ui-widget , wp-a11y, underscores, thickbox, & load [] = shortcode, backbone, wp-util, wp-backbone, medium-models, plupload, wp-plupload, MediaElement, wp-MediaElement, medium-views, media editor, m & load [] = edia-audio-video, editor, media-upload & ver = 4.8.3: 3)
    jquery-ui-core, jquery-ui-widget, jquery-ui-mouse, jquery-ui, jquery-ui, jquery-ui, jquery-ui -sortable, wp-a11y, underscores, thickbox, & load [] = shortcode, backbone, wp-util, wp-backbone, medium-models, plupload, wp-plupload, MediaElement, wp-MediaElement, medium-views, media-editor m & load [] = edia-audio-video, editor, media-upload & ver = 4.8.3: 3)
    at Object.trigger (load-scripts.php? c = 1 & load [] = jquery-core, jquery-migrate, utils, jquery-ui-core, jquery-ui-widget , wp-a11y, underscores, thickbox, & load [] = shortcode, backbone, wp-util, wp-backbone, medium-models, plupload, wp-plupload, MediaElement, wp-MediaElement, medium-views, media editor, m & load [] = edia-audio-video, editor, media-upload & ver = 4.8.3: 3)
    jquery-ui-core, jquery-ui-widget, jquery-ui-mouse, jquery-ui-ji, jquery-ui-ji -ui-sortable, wp-a11y, underscores, thickbox, & load [] = shortcode, backbone, wp-util, wp-backbone, medium-models, plupload, wp-plupload, MediaElement, wp-MediaElement, medium-views, average -editor, m & load [] = edia-audio-video, editor, media-upload & ver = 4.8.3: 9)
    at HTMLBodyElement. <anonymous> (load-scripts.php? c = 1 & load [] = jquery-core, jquery-ui, jquery-ui-ji -sortable, wp-a11y, underscores, thickbox, & load [] = shortcode, backbone, wp-util, wp-backbone, medium-models, plupload, wp-plupload, MediaElement, wp-MediaElement, medium-views, media-editor m & load [] = edia-audio-video, editor, media-upload & ver = 4.8.3: 3)
    at function.each (load-scripts.php? c = 1 & load [] = jquery-core, jquery-ui-widget, jquery-ui-core, , wp-a11y, underscores, thickbox, & load [] = shortcode, backbone, wp-util, wp-backbone, medium-models, plupload, wp-plupload, MediaElement, wp-MediaElement, medium-views, media editor, m & load [] = edia-audio-video, editor, media-upload & ver = 4.8.3: 2)

Disattivando il plugin mi funziona di nuovo tutot come prima